Remote Wideband Microwave Frequency Measurement Based on a Single-Passband Microwave Photonic Filter

A new method for remote wideband microwave frequency measurement utilizing a single-passband microwave photonic filter is proposed, theoretically analyzed, and experimentally demonstrated. The frequencies of the input microwave signals can be measured by monitoring the maximum output microwave power while scanning the central frequency of the single-passband microwave photonic filter. The parameters of the filter have also been analyzed to optimize the frequency measurement performance. The proposed frequency measurement technique is easy to implement, capable of measuring frequencies of multiple microwave signals.